<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <title>10_key</title>
</head>
<body>

<div id="root"></div>



<script>

var aa = function (num){
  return function func(num){
      return num
  }
}

var bb = function (sum){
  return sum
}

aa(3)
bb(3)


</script>
</body>
</html>
